Hi Kate, I am a huge supporter of sing seasonal produce so why not try a rich compot of Rhubarb and ginger, or Pears poached in wine or brandy syrup and vanilla.
With both if you fold the cold chopped pears or cold rhubarb compot ( keep the red skin on and you will get the most glorious pink compot, also a splash of vodka helps keep the colour) in to sweetened whipped double cream.
For the top if you lavishly spread more whipped cream or sweetened mascarpone over the surface with big waves creating a textured finish. Spoon more compote or pear over and around with syrup drizzled down the sides so it soaks in and makes the cake really moist.
And finally a grating of lemon zest and some fresh small mint, basil or thyme leaves to finish.
Its a super dooper para trooper dessert cake.
Let me know if this is the type of thing you were thinking of?
love
Paul xxxx