It seems to me keeping up with all the things needed to be done to keep altcoin wallets up and running may be the death of many alts.
Although it's been good for some who enjoy learning and reading endless post's to try to keep your wallets synced, this fact alone I think will kill off many alts in time. Why? Because the average joe who may want to invest is going to say forget it when realizing how time consuming it really is.
Myself am going to dump many after getting synced, not because I don't like the coins, I just don't have 6 hrs every weekend to keep up.
 A couple of wallets that work easily, don't need constant upgrades and work reliably is all I will hang on to, And I think so long as these communities continue to over complicate maintenance and use, will prove to be the end for most. Opportunity for mass adoption from the general public won't care about features if it's to time consuming to maintain. Besides sitting on a balance of 10 BTC may/probably will someday payout in many multiples for the investment without all the hassles.
Just my 2 satoshi  easy to use will win the day! and alll the profits.