I noticed this thread a while ago, but didn't bother to read it as I have no real interest in following the IPL, but after reading it I thought I'd put down a few thoughts.
Firstly I will make a few things clear.
1: I have never watched an IPL match.
2: I have watched lots of T20Cup matches over a period of years (not on tv, at grounds)
3: While I like and follow all forms of the game, I would say I like T20 the least. Not so say I dislike it, I just prefer other games.
4: I neither dislike IPL or like it, I don't care about it. Its an Indian competition.
Ok. Onto comments.
Quite a few posts here about the quality of cricket. General observation being English members say the quality of the T20cup is better, Indians counter with better players in IPL. Now as I have said, I haven't watched any IPL, I also haven't checked any scorecards so I don't know how any of the matches ended, and I don't care. But I will agree that there are more top cricketers playing in India . But it doesnt really matter who is playing, you get a good game if the match is balanced. Perhaps the spread between the teams is greater at the moment, whereas the teams are more evenly matched in England. A game between 2 lesser talented teams is better to watch than a game between Australia and Zimbabwe for example.
With regards to tactics. There are certainly some players in the T20cup in England who play T20 very well, but have absolutely no chance of getting anywhere near the national side. They are too old, too young, their face just doesn't fit, or a whole number of reasons that aren't really going to get us anywhere. But I have seen a vast improvement in the tactics used in the T20cup over the past few years, probably IPL will find these out soon enough. The ability of bowlers to take pace off the ball in the middle of innings has become key for example. Spinners also play a much bigger role than they used to.
Day/Night matches. The majority of grounds used in England don't have permanent floodlights so yes there aren't all that many day/night matches. This probably will change as the ECB has given grants to all counties specifically for floodlights. I don't know about in India but in England the ground can get a bit dewy in the evenings so floodlight matches sometimes don't give the most entertaining of results anyway. Besides when T20cup is played it stays light till pretty late anyway. Floodlight cricket does tend to pull in more people in England, but I think thats as much down to the fact the at most clubs the floodlight game tends to be televised and more people turn up for televised games (I don't know why but they do!).
With regards to the length of IPL, I think it goes on for too long. Even if I did want to follow it I would lose interest. 6 weeks is too much, probably they need to compress it down to 4 weeks OR they need to spread it out a bit. 6 weeks isnt too long if there are breaks between games. Certainly a competition of that intensity and length wouldn't work outside India.
Lastly, I''m not a fan of all the ancillary stuff going on around the games. Cheerleaders and stuff. This sort of thing panders to people who actually don't like cricket rather than people who do. They tried this sort of thing in England (not to the extent that it happens in the IPL) and its just faded away, it didn't really add anything in the long run. People who like cricket will go to watch cricket regardless.