Started this brew a month ago with 1kg of light spraymalt, and 2 litres of fresh elderflowers - I made it specifically because I wanted an elderflower ale, so this is as much a report on the kit as its suitability for doing fun stuff to. Other than using elderflowers and spraymalt (the instructions say to use beer enhancer) I followed the kit to the letter: I brewed for eight days, which is how long it took for the SG to stop dropping, then strained off the elderflowers, and primed and bottled as usual. Accounting for bottle conditioning, the ABV came in at 4.8%.
I opened up a bottle after a week, and it tasted like dishwater, with a heavy dose of cheap washing up liquid. Not pleasant at all. Fortunately I wasn't expecting it to be fantastic that early, and knew these things can change radically over time, so I didn't throw the lot away.
It's a good thing I didn't, because I opened a second bottle last Sunday (three weeks after bottling) and it tasted very different and much more pleasant. Each bottle I've opened since has tasted better than the last, and yesterday I shared a few bottles with my uncle and cousin, both of whom really liked it. They're builders and had been working outside all day repairing the stonework on my aunt & uncle's house, so I think a pint of light ale was very welcome. My uncle said it reminded him of Abbot & Edmunds (his favourite beer, being a half-pint of each) so maybe the sun had got to him a little. I'm definitely looking forward to seeing what it'll be like in a few weeks.
Re. the elderflowers, I got the balance exactly where I wanted it on my first try (beginner's luck eh?) with the elderflower coming through nicely but not overpowering at all. If anyone is wanting to do an elderflower ale without going down the BIAB/all-grain route, this is definitely the way to go.
Reading through this thread, others' experience with this kits seems to be that it can turn out bland or insipid, and I can well imagine that being the case if I'd not used spraymalt and elderflowers. It definitely looks like a kit that's best suited as a base for playing around with, rather than an ale on its own merits. Pcrofts27 used it as the basis for a citrus ale, and I suspect that peach, nectarine &/or apricot juice might also work well, as would ginger and possibly cinnamon. It's certainly one I'll be experimenting with again.