there are new detents that are coming out from killa products I beleive and you should be able to pick some up from campaign, this would be a good investment, failing that just keep your current detents lubricated.
the revolver kit is good and you get a good range of backs to enable you to match it to your paint size, I've been using a pipe kit but if i had some spare money would probably invest in a revolver kit.
at the moment we are looking at changing our reloader boards for B2 boards as this should enable us to shoot uber fragile paint.
If stako bottles get unbanned they are pretty handy as they are really light and makes your set-up weigh nothing, but I have heard of an empire air system coming out that should be really light as well. Think it's called the fuel air system, but I have been known to be wrong before.
if you want a board that does absolutely everything then you could get an APE board, it's not really nescessary as the mini comes with all the firing modes you need but does have some nice little features. The only problem is because it does so much it can be hard to program from what I've heard.